The Bible suggests that one shouldn't be lukewarm in faith, or he/she will be "spit" out; better to be cold or hot. I suppose this is a warning to all to take a strong stand on what he/she believes, come what may.

As  frogs can be boiled to death by slowly heating the water that it sits in, so can human aspirations die in the comfort of lukewarm environments. If you don't feel the heat or the cold, is something wrong out there?

Hellooo...boycott jacuzzis!  ;p